package com.atguigu.reggie.controller;

import com.atguigu.reggie.common.R;
import com.atguigu.reggie.entity.Employee;
import com.atguigu.reggie.service.EmployeeService;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;


/**
 * @author Luo Sheng
 * @school YiBin university
 * @create 2022-10-08 23:01
 */
@Slf4j
@RestController // controller + responseBody
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
     private EmployeeService employeeService;

    /**
     * 员工登陆
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        // 1、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        // 2、如果没有查询到则返回登陆失败结果
        if (emp == null){
            return R.error("登陆失败");
        }

        // 3、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        // 4、密码比对，如果不一致则返回登陆失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("登陆失败");
        }

        // 5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        // 6、登陆成功，将员工id存入Session并返回登陆成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee,HttpServletRequest request){
        log.info("新增员工，员工信息：{}",employee);

        // 1、设置初始密码123456,需要进行Md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        // 2、设置创建时间和修改时间
        // employee.setCreateTime(LocalDateTime.now());
        // employee.setUpdateTime(LocalDateTime.now());

        // 3、设置该用户的创建人ID
        // employee.setCreateUser((Long) request.getSession().getAttribute("employee"));
        // employee.setUpdateUser((Long) request.getSession().getAttribute("employee"));

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息的分页查询
     * 添加了requestParam就必须含有该参数
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page( int page, int pageSize, String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);

        // 构造分页构造器
        Page pageInfo = new Page(page,pageSize);

        // 构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        // 添加过滤条件
        queryWrapper.like(StringUtils.hasLength(name),Employee::getName,name);

        // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        // 获取修改人姓名
        Long empId = (Long)request.getSession().getAttribute("employee");

        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        // 该方法只修改employee中有的值

        employeeService.updateById(employee);

        return R.success("员工修改成功");

     }

    /**
     * 编辑用户
     * @return
     */
    @GetMapping("/{id}")
     public R<Employee> getById(@PathVariable Long id){
        log.info("查询员工员工的id是：{}",id);

        Employee employee = employeeService.getById(id);

        if(employee != null){

            return R.success(employee);

        }

        return R.error("没有查询到对应的员工");


     }

}
